Automatic punching machine



Jan. 4, 1938. c. D. LAKE 2,104,542 AUTOMATIC PUNCHING MACHINE Filed Oct. 9, 1954 7 Sheets-Sheet 1 IN VEN TOR,

Jan. 4, 1938. c. D. LAKE AUTOMATIC PUNCHING MACHINE Filed Oct. 9, 1934 7 Sheets-Sheet 2 To w g A TTORNEY Jan. 4,1938. c. D. LAKE I 2,104,542

AUTOMATIC PUNCHING MACHINE Filed Oct. 9, 1934 7 Sheets-Shet 3- 2 IN VEN TOR. I

ATTORNEY Filed Oct. 9, 1954 7 Sheets-Sheet 4 Jan. 4, 1938. c. D. LAKE AUTOMATIC PUNCHING MACHINE F iled Oct. 9, 1934 7 Sheets-Sheet 5 INVEN TOR.

ATTORN Y.

FIG].

Jan. 4, 1938.

Filed Oct. 9, 1954 7 Sheets-Shegt 6 INVENTOR.

ATTORN Y' 7 Sheets-Sheet '7 Filed Oct. 9

C D LAKE AUTOMATIC PUNCHING MACHINE F'IG.8.

Jan. 4, 1938.

A TTORNEY Patented Jan. 4, 1938 AUTOMATIC PUNCHING MACHINE Clair 1). Lake, Binghamton, N. Y., asslgnor to in ternational Business Machines Corpo ation, New York, N. Y., a corporation of New York Application ottomt, 1934. Serial No. Mtflhil Claim.

This invention relates to accounting machines and more particularly to machines of the record controlled type.

The principal object of the invention is to 5 provide an improved accounting system in which a controlling accounting machine may be asso ciated with a punching machine for punching data in record cards under control of a tabulating machine.

Another object resides in the provision of a punching machine of the tym in which corresponding index point positions of a record card are concurrently perforated, which machine may be remotely controlled by an accounting machine of the tahulator type and in which, through improved mechanism, the machines need not be synchronous in their operation.

The tabulating machine is adapted to analyze groups of record cards and accumulate and print totals in accordance with the analysis of the record cards. The cards are usually arranged in groups'and after the complete analysis of each group, a total printing cycle of operations is initiated, during the first half of which the total for the group is printedand during the second half, the accumulators are reset or zeroized. In the present invention, provision is made for interrupting the total taking cycle after the completion of the first half thereof, before resetting operations take place, and for initiating the operation of the punching machine to automati-v cally punch in a record card the total standing on the accumulators, thereby preparing a socalled summary or total card. Immediately following the initiation of the punch operation, the tabulator resumes functioning and the accumulator resetting mechanism commences to operate and continues to do so concurrently with the operation of the punching machine so that 40 total punching takes place while the accumulators are being reset.

The punch is provided with record analyzing mechanism for analyzing a perforatedcard for.

lator must remain idle for the duration of the punching operation. with the present arrangement, punching talres place substantially concurrently with the usual resetting operation with but a slight additional time interval to permit 5 the punching machine to effect a slight advance before the resetting operations start.

Still other systems have been devised in which the punching mechanism is incorporated in the design of the tabulator so that punching and 10 printing take place simultaneously. In such machines the punch is an integral part of thestructure and cannot he operated independently of the tabulator. The present arrangement retains all the flexibility ofthe two-unit system wherein 15 the tabulator and punching machine may each be independently operated to perform independtabulating or punching operations while appreaching to a marked degree the time-saving advantages of the single unit arrangement ,with- 20 out the incident complicated mechanical interconnections.

Various other objects and advantages of the invention will be obvious from the following particular description of one form of mechanism 5 embodying the invention or from an inspection of the accompanying drawings;'and the invention also constitutes certain new and novel features of construction and combination of parts hereinafter set forth and claimed. 30

In the drawings: f

Fig. 1 is a central sectiomthrough the total printing unit of the tabulating machine.

Fig. 1a is a detail showing the accumulator resetting gear connection. I Fig. 2 is a central section-of .thepunching machine.

Fig. 3 is an outside view of the punching machine looking from the opposite direction to that from which Fig. 2 is taken. 40

- Fig.4 is an isometric of one denominational order of an accumulator.,

Fig. 4a is a detail of anaccu'mulating wheel and its resetting pawl. I

Fig. 5 is a fragment of a record card.

Fig. 6 is a detail of the total taking cycle controlling clutch of the tabulator.

Figs. 7 and 7a, placed one above the other, constitute a wiring diagram of the electrical connections of the tabulator.

Fig. 8 is a wiring diagram of the electric circuits of the punching machine.

The two units of the apparatus comprise a tabulating machine which is of the general type shown in the copending application of C. D. Lake and G. F. Daly, Serial No. 672,388, filed May 23, 1933, now Patent No. 1,976,617, granted October 9, 19st, and a punching machine of the type shown and described in the copending applica- 'Tabulating machine operation In Figs. 7 and 7a is shown the wiring diagram of the tabulating machine. During card feeding and analyzing operations the machine is driven by the tabulating motor TM which is controlled by a. group of circuits including relays and cam operated contacts and during total taking operations the machine is driven by a motor RM which is also controlled by relays and cam controlled contact devices which are illustrated in the upper portion of Fig. 7. During the operation of the motor TM the usual perforated cards will feed successively past a set of upper analyzing brushes UB and then past lower analyzing brushes LB. As they pass the latter, the items represented by the perforations may be entered into accumulators represented by accumulator magnets in (Fig. 7a) and printed under control of printing magnets i i The cards continue to feed and the successive items continue to be entered as long as certain classification holes do not change, this being taken care of by the usual group control mechanism generally designated GC. On a change in the group classification perforations, the group control system interrupts accumulating and item printing. During the ensuing total taking operations, printing is controlled by the read-out devices of the accumulators and this same read-out mechanism will control the operation of the punching machine to perforate a record card in accordance with the total standing on the accumulator in a manner to be more fully explained.

Each card column contains ten index point positions differentially located to represent the ten digits and a different digit is represented by a perforation in each position. As the card passes the lower brushes LB the position of its index points determines the time .of closure of circuits. As each record column passes its lower brush LB a printing circuit will be completed upon the analysis of a hole which is traceable as follows: from the right side of line I 4, through lower card lever contacts I5 (Fig. 7), contact devices l6, lower brush contact bar H, perforationin the record card, a plug connection such as, for example, l2 which extends to a socket IS on Fig. 7a, normally closed contacts Illa, printing magnet ii to left side of line [9. This is the normally effective printing circuit. A parallel circuit may also extend from socket l3 through accumulating magnet I ll whereby the same amount will be added aswell as printed.

The mechanism controlled by the printing magnet is shown in Fig. 1. Type bars 20 are carried by erosshead 2i which is slidable vertically on rods 22. The spring-pressed arms 23 pivoted to the crosshead have their free ends abutting the lower extremity of the type bars so that as the crosshead moves upward, the type bars are urged in the same direction. The reciprocating movement of the crosshead is controlled during adding and listing operations from the listing shaft 24 and during total taking operations from the total taking shaft 25 which shafts carry suitable cams for operating the mechanism. As the type bars move upwardly, the type elements 32 will successively pass printing position opposite platen 33 and ratchet teeth 34 will successively pass the nose of the stop pawl 35. Energization of magnet II will trip latch 36, permitting stop pawl 35 to engage one of the ratchet teeth 34, thus positioning the corresponding type element opposite the platen.

The mechanism controlled by adding magnet II] is shown in Fig. 4. This adding mechanism is of the well-known Hollerith type and its operation, briefly, is as follows:

A shaft 31 is driven in the usual manner with the card feeding mechanism so as to make one revolution for each card passing through the ma chine. Attached to shaft 31 and rotating therewith are clutch elements 38 which are shiftable along the shaft to engage the other faces 39 of the clutches. These latter elements are integral with gears 40 which mesh with gears 44 associated with the usual numeral or index wheels 42 freely carried on shaft 43. Each clutch element 38 is normally urged towards its related element 39 by a pivoted lever 44 which is urged in a counterclockwise direction by a leaf spring 45.

Movement in this direction is normally prevented by an armature latch 46 which engages a block 41 to hold the arm 44 in the position shown in Fig. 4. When magnet III is energized, the latch 46 is released and the driving element 38 engages 39 to cause rotation of the index wheel 42. At the end of each revolution of shaft 31 the clutch 38 is mechanically disengaged in the usual manner so that the amount of rotation imparted to the index wheel 42 is dependent upon the time in the cycle at which magnet 10 is energized. Thus, if magnet I is energized at the time, wheel 42 will be advanced five steps before the clutch is disengaged.

Associated with each adding wheel is a total read-out device which consists of a commutator 48 provided with segments 49 corresponding in number and position to the several digit indicating positions of the index wheel. A brush structure 50 is carried by and insulated from a. gear 5| meshing with gear 40 so that the brush structure 50 is angularly displaced an amount corresponding to the reading on the numeral wheel. The structure carries two brushes, one of which engages the segments 49 and the other engages a common segmental conductor- 52 whose contacting surface is concentric with the supporting shaft of gear 5|. The segments 4! and conductors 52 are diagrammatically represented in developed form in the circuit diagram, Fig. 7a.

Each group of segments 49 corresponding to the same digit is connected to a common conducting wire 53 whereby all the 9 segments are in multiple, all the 8" segments are in multiple, and so on.

The wires 53 have a branch extending through a cable 54 to an emitter 55, shown diagrammatically, which is driven in synchronism with the movement of the printing crosshead during total printing operations; This emitter consists of a double brush structure 5! which may be mounted on the total taking shaft 25 of Fig. 1. One of the brushes 56 is adapted to successively contact with the segments as the correspondingly num bered type elements pass through printing posi-' conducting strips 52 to the corresponding printing magnets H by Causing closure'of contacts W1). A representative circuit will now be traced to illustrate the manner in which the printing mechanisrnmay be actuated from the total taking devices. Assuming the digit 5 to be set on one of-the commutators 49, 52; during the total taking cycle as the brushes 56 of the emitter 55 rotate in synchronism with the operation of the printing mechanism, a circuit will be completed from right side of line 14, contacts 58, common segment 59, brushes 56, 5 segment 51, cable 54, 5 wire 53, 5 segments 49, brush structure .50 (dotted in the units order position of Fig. 7a), common conductor 52, contacts I 82), print magnet II, to left side of line l9. In this manner the value standing on the read-out device of the accumulator will be printed.

The operation of the tabulating machine thus explained hereinafter, is energized during total taking operations and controls the completion of the circuits through the punch operating magnets of the punching machine.

Total punching circuits Referring to Fig. 8, the punch is provided with an emitter 6| whose brush 62 traverses segments 63 whenever the punching machine is in operation. Wires 64 extend from segments 63 to sockets 65 of the punch, from whence connections .may be made'to sockets 66 tFig. 7). of the tabulating machine. The timing of the apparatus is such that the emitter 55 sends a succession of impulses to the segments 49 for total printing,

purposes and thereafter the emitter 61 sends a second set of impulses to the segments 49 for total punching purposes. A representative punching circuit will now be traced in detail. Assuming the same digit 5 in the units order to be set on the appropriate commutator, this circuit extends from right side of line 61 of the punching machine (Fig. 8) to circuit breaker 68, card lever contacts '69, cam contacts RI, closed during the period that the index point positions of the cards are analyzed in the punching machine, which is the period during which the card to be punched passes the'punches 83, wire 10, emitter brush 62, 5 segment 63, 5 wire 64, socket 65, suitable connection to socket 66 (Fig. 7), contacts 68a, 5 wire 53-, 5 segments 49, brush 58 in the 5 position of the units order, common conductor 52, wire I l, to one of the sockets 12 from which suitable connections are made to sockets 13 (Fig. 8) of the punching machine. From the socket l3, plug connections, such as I4 are made to selected sockets l5 and the circuit continues to the punch magnet .16 and thence card having an intermittent movement.

through relay contacts 11a to the left side of line l8 of the punching machine.

The cam controlling contacts RI are carried by shaft 200 (Fig. 3) which makes-one revolution for each card fed. This shaft corresponds to shaft 9| of PatentNo. 2,032,805 and is driven in the same'manner. The manner in which the timed energization of the punching magnet causes punching in the 5 index point position of the selected column of the summary card will be set-forth in'detail later. The several connections made between the ,tabulating and punching machines, as, for

example, those between the sockets 65, 66 and 12, "I3 as' well as several others to be further referred to, may be gathered into a single connecting cable for ready interconnection of they two machines.

Punching machine operation Referring to Fig. 2, the hopper 88 contains blank cards which are to receive the summary punching in accordance with the amount standing on the accumulators of the tabulating machine and a second hopper 8| contains pattern cards which are perforated with other data which it is desired to reproduce in the summary cards along with the punching of-the total amounts. When the machine is conditioned for reproducing, the record cards are fed in synchronism from the two hoppers. As they are fed, a pattern and associated blank card are simultaneously placed in related feed rollers and then .moved along concurrently and in synchronism, the blank The pattern card passes a sensing station where the perforations therein are analyzed by analyzing brushes 82 and the blank card passes a punching station where punches 83 register with the index point positions of the card. The blank cards pause momentarily at each index point position' so that if a perforation is to be effected, the punch has time to penetrate and withdraw from the punched card.

The pattern card is sensed at each line of index points and if a perforation appears, a circuit is established through a selected one of the punch controlling magnets 18, the armature of which is connected by a call wire 84 to an interposer pawl 85 articulated on the upper end of the punch plunger 83. The pawl 85 has a shoulder normally out of the path of a positive actuator 86 which is reciprocated once for each row of index p'oint positions sensed. When a magnet 16 is energized, it draws its associated pawl 85 into engagement with the actuator 86 which engagement is efiected as the actuator is lowered and it is thus picked up and forced downwardly to cause the associated punch to penetrate the record card. On the return movement of the actuator, the pawl 85 is moved upwardly and disengaged from the actuator by a fixed camming element 81.

The driving instrumentalities of the punching machine are shown in Fig. 3 wherein the main driving motor M is connected by a suitable belt and pulleys for rotation of a shaft 88. Fixed to the shaft 88 is a gear 89 which serves to drive the constantly running devices of the machine. Gear 89 through gearing generally designated 90 drives a clutch element 9| which under control of a clutch magnet 82 is adapted to drive gearing 93 which in turn, throughthe gears indicated, operatesthe sensing unit of the machine to feed a blank card from hopper for each cycle of the machine.

Gear 89 carries a pin 94 for operating a Geneva wheel 95. from which the feed rollers for conveying the summary card past the punching station are operated. In this manner, they proceed past the punches 83 with a step-by-step motion. In Fig. 2 the shaft 88 carries an eccentric 97 which through arms 98 is adapted to rapidly oscillate shaft which has connection to the vibrating actuator 86. The relationship of the parts is such that for each row of punching positions in the card presented to the punches 83 there will be a reciprocation of the actuator '86 and if a magnet ?6 is energized at such time, the associated pawl 85 will be coupled to the actuator and a perforation in the record card will result.

After a record card has been moved past the punches it encounters a set of analyzing brushes I00 which may sense the perforations just effected and complete circuits to energize magnets "I6 to reproduce the punchings in the next following record card. Generally speaking then, the punching magnet I6 may be energized under control of analyzing brushes 82 which read perforations in the pattern cards or under control of analyzing brushes I00 which read perforations in preceding punched cards. These two methods of controlling the magnet I6 are more fully dealt with in the copending application, Serial No. 685,379. For the purposes of the present invention, the magnet "I6 may be further energized under control of the read-out devices of the accumulators of the tabulating machine and such control may obviously be in conjunction with, or independently of, concurrent control of other magnets I6 by either brushes 82 or brushes I00.

Referring now to Fig. 1, the motor RM is in operation during total taking operations and through worm IN and worm wheel I02 drives clutch element I03 freely mounted on the total shaft 25. Associated with the element I03 is the clutching dog I04 carried at one end of an arm I05, either extremity of which may be engaged by clutch arm I06 pivoted at I01 and controlled in its operation by reset magnet I08. Energization of magnet I08 will release dog I04 for engagement with driving element I 03 at which time the parts will be in the position shown in Fig. 6. If magnet I08 is'then deenergized, the dog I04 will be disengaged after shaft 25 has made a half revolution due to the engagement of arm I 08 with. the opposite end of arm I05. More specifically, an arm I05a is fixed to shaft 25 and carries pawl I04. Adjacent to arm I05a is a somewhatsimilar arm I05 loose on shaft 25 and free to move within the limits of a pin and slot connection I04a with the arm I05a. The pawl I04 is drawn into engagement with ratchet I03 by spring I041) connected to the arm I05a.'

The rear end of pawl I04 engages a pin I05b on the arm I05 and through the power of spring I04b passes the arm I05 ahead of arm I05a a distance equal to the amount of play in the-pin and slot I04a. When the magnet I08 is deenergized, the arm I06 is drawn by its spring into the path of the rotating arms I05, I05a. The arm I05 being slightly in advance engages arm I06 first and is stopped while the other parts tend to continue to turn. This relative movement causes pin I05b to press against the rear end of pawl I04, lifting the latter out of engagement with the ratchet I03. This breaks the Integral with wheel is a gear 98 coupling and as soon as this has taken place I the arm I05a also engages arm I08 and shaft 25 is brought to a positive stop. This mechanism constitutes a well known form of half revolution clutch shown in detail at Fig. 1a of Patent No. 1,822,594 and is utilized in the present machine to interrupt the total taking operation of the tabulator at its mid point, before resetting of the accumulators is initiated. Shaft 25 carries a mutilated gear I09 which is adapted to drive gear IIO on shaft III during the second half revolution of the total shaft 25. Shaft III (Fig. la) carries gears II2 which-drive gears II3 carried on the extremity of the accumulator index wheel shafts 43 and rotation of gears H3 in a counterclockwise direction will effect restoration of the accumulator wheels by advancing them to zero position.

Wiring diagram The complete automatic operation of the entire apparatus will now be set forth in connection with the electric circuits thereof and the complete sequence of operations will be explained insofar as it is necessary to point out the changes over prior machines.

With groups of record cards placed in the supply hopper of the tabulating machine and blank cards placed in the hopper 8I of the punching machine, the tabulator may be started in the usual manner to successively feed record cards past the analyzing brushes so that the data thereon may be printed and accumulated through the listing and adding circuits representatively traced above. During such adding and listing cycles of operation, the driving elements of the machine are maintained in operation by the following circuit which extends from the left side of line IS in Fig. 7, through contacts PI main drive clutch magnet II4, motor relay magnet II5, relay magnet II 5, contacts IIBa, contacts UCLq, contacts IIGc, stop key contacts SP, wire I, which extends through suitable plug connection to the punching machine (Fig. 8), relay contacts IIBa, which are closed when cards are in the magazine 8I, wire H9, through suitable plug connection back to the tabulating machine, relay contacts I20a, to right side of line I4. Contacts I20a are closed at this time through the energization of motor control relay magnet I20 which remains energized as long as control designations on successively fed record cards are in agreement and which, under control of the group control mechanism GC', becomes deenergized when a change occurs and remains deenergized until total taking operations have been effected. Therefore, upon a group change, the deenergization of magnet I20 will open contacts I20ato interrupt the normal drive controlling circuit just traced and card feeding and data entering operations will cease. The consequent closure of contacts I20b will initiate the usual total taking operation by completing a circuit traceable from the right side of line I4, contacts I20b, automatic reset switch I2 I, camcontacts L3, relay magnet I22, cam contacts P3, to left side of line I9. Relay I22 will close its contact points I22a to complete a circuit from line I4, contacts I22a, cam contacts L4, contacts PI4,- reset clutch magnet I08, normally closed relay contacts I24c, cam contacts P3, to line I8. Magnet I08 willclose a pair of associated contacts I25 which complete the circuit to reset motor RM and since energization of magnet I08 has tripped its clutch the total shaft 25 will rotate for a half revolution and then come to a stop. Contacts PI4 open shortlyafter the total taking cycle begins so that magnet I08 will be" deenergized and its armature will return to position to reengage theclutch arm. During this half revolution the type bars will be elevated and total printing will take place under control of the read-out commutators of the accumulator through circuits as traced above.

When the tabulating machine is to be operated independently of the punching machine, switches I6I and I 23 are closed, The former shunts out relay contacts IIBa of the punch and the latter shunts out contacts PI4 and PI5 in the reset circuit so that the circuit will remain energized until contactsPS open. These contacts are timed to open during the second half of the total taking cycle so that, when tabulating without accom panying operation of the punch, the total cycle is effected in one continuous revolution of total shaft 25.

Connectedin series with the motor control relay I20 is a minor control relay magnet I26 which controls a pair of contacts I26c in the lower part of Fig. 7 which are accordingly open as long as successive cards are in agreement and which close upon a group change sothat with switch I21 closed, a circuit will be completed upon a group change which is traceable from line I4, card lever contacts I5,wire I26, switch I21, contacts I260, contacts L26 (which close momentarily during each adding cycle), relay magnet H6 and I30, to line I5. Magnet I29 will close its contacts I20a to-provide a holding cir-' cuit from line I9 to magnets I30 and'I26, con- 40 point positions have passed the punching station. Contacts I52 are controlled bya cam ounted on the shaft 200 (Fig. 3). Upon closure of contacts I20a a further circuit is also traceable from line l0, relay magnets I24, I33, contacts L25 .(timed to close after L26 have opened), contacts I260, wire I32 (Fig. 8), contacts I52, to-line 61. Magnet I32 will close its contacts I33a so that the circuit will branch therethrough to energize magnet which, as explained above, will cause closure of a group of contacts 60a which serve to connectthe readout device 40,50, 52 of the accumulator in the tacts I26a, wire I32, connection to the punch tabulating machine to the emitter SI of the punching machine. Contacts '25 are adjusted to remain closed during total taking operations so that a holding circuit is provided for magnet 60 which is traceable from line I6, magnet 60, contacts I33a, contacts L25, contacts I200, wire I32, contacts' I52 (Fig. 8) to line 61. This circuit will remain established until punching of the total has been effected.

Just before the completion of the first half revolution of the total shaft 25, a pair of cam contacts PI2 (shown at the right hand side of Fig. 7) close momentarily and complete a circuit which is traceable from line 10 (Fig. -8) through.

wire I35, motor relay magnet. I36, relay magnet I31, wire I38. through suitable connection to the tabulating machine (Fig. 7), thence through contacts PI2, wire I39 (Fig. 8) normally .closed relay contacts I40c, contacts IIOc, switch I42, now closed, stop contacts SPC, to right side of line 61. The contacts-I lie in this circuit are closed by energization of magnet II8 which is energized as long as there are cards in the punch supply to operate.

magazine. Energization of motor relay magnet I36 will close its contacts I360 (shown in the upper part of Fig. 8) to complete the circuit to the punch driving motor M and the punching ma-' ing circuit thrdugh cam contacts I44 which close soon-after the punching machine has commenced As the card to be punched enters the punch die, a pair of card lever contacts I45 in the upper part of Fig, 8 close, completing the circuit including relay magnet I40. This will cause opening of the contacts I400 and closure of contacts Oh so that a further holding circuit fonthe punching machine operating circuits becomes established which is traceable as follows: from left side of line 18 (Fig. 8) wire I35, magnet I36, magnet I31, wire I38 (Fig. 7) cam contacts PI2, now closed, relay contacts I30a, also closed, wire I48 (Fig. 8), relay contacts I402), contacts I I80, switch I42, stop key contacts $PC, to line 61.

During the operation of the punching machine the emitter 6i will operate to send a succession of impulses through wires Bl to the read out devices of the accumulator and circuits as previously traced will be completed tothepunching' magnets 16, at times in synchronism with the presentation of the successive index point posi- Referring to Fig. 4 it will be observed that the brush structure 50, when reset, is advanced in a counterclockwise direction to traverse the seg-.

ments 49 in the orders 1, 2, 3, 7, 8, -9 since during reset operations theshaft 43 is given a complete rotation ,in a counterclockwise direction and the axial notch therein will engage pawls I41 (Fig. 4a.) to rotate the associated index wheels 42 back to zero position. Itwill be observed that for-those orders in which an entry is made the pawl I41 will have been displaced in a noun: terclockwise direction away from the notch a distance proportional .to the entry so that during resetting the shaft will not pick up the pawl until it has covered the. interval of displacement. Since punching takes 'place in the orders 1, 2, 3 '1, 8, 9, resetting may take place shortly after punching has commenced. Thus, for example, when the punching circuit has been completed to a brush structure 50, the same may shortly thereafter be picked up to begin its counterclockwise rotation toward home position and complete restoration of all brusheswill be effected shortly after all positions have controlled their respective punching circuits. With such construction the punching machine motor M'an'd the resetting motor RM may have such speeds of operation as will cause the punching machine to complete its cycle slightly before the resetting cycle is completed or the punch mechanism may complete its operation considerably before the resetting is complete. T116185:- ter arrangement is found to be more practical since the punching mechanism is comparatively light and'can consequently be run at much higher speed than the resetting mechanism.

The circuits for initiating the operation of the resetting devices will now be explained. Shortly after the emitter 69 has commenced operation, a pair of cam contacts M8 (Fig. 8) will close and a circuit will be completed from right side of line 3i (Fig. 8) through contacts I48, relay contacts H822, closed as long as cards are in the punch magazine, wire M9, connection to Fig. 7 relay magnet iBI, wire 550 (Fig. 8) to line I8. Magnet I3I will close its contacts I3Ib which permit the completion of a circuit traceablefrom line I4, relay contacts 5201), now closed, switch I2I, a switch 154, contacts I3Ib, relay magnet I22, contacts P3, to line I9. Energization of relay magnet I22 will initiate a further operation of the reset clutch magnet I08 through contacts PIE which are now closed, releasing the total shaft so that it may complete its revolution during which the mutilated gear I08 of Fig. 1 will drive the reset shaft III to cause restoration of the accumulators. After all positions have been punched, contacts I52 (Fig. 8) open to release the holding circuit of magnet 60 thereby disconnecting the read-out from the punch magnets. During this half revolution the group control mechanism GC is again set up in the normal manner and the motor control relay I20 is again energized so that automatic card feeding, analyzing, and item printing and accumulating of data will take place from the next-succeeding group of record cards in 'the normal manner.

If switch I55 (Fig. 8) is moved to its On .or dotted line position, clutch magnet I56 will be energized concurrently with magnet 92 and pattern cards will be advanced past their analyzing brushes 82. Circuits will therefore be completed to magnets '18 to punch data derived from the pattern cards along with the data derived from the accumulator. Magnet I56 is shown in dotted outline in Fig. 2 and trips the clutch mechanism also indicated in dotted outline to cause operation of the picker mechanism associated with hopper 8I.

In Fig. 5 is shown a fragment of a summary card in which the data under the heading Total is punched under control of the accumulator while the data headed Acct. No. is punched under control of a pattern card.

While there has been shown and described and pointed out the fundamental novel features of the invention as applied to a single modification, it will be understood that various omissions and substitutions and changes in the form and details of the deviceillustrated and in its operation may be made by those skilled in the art withoutdeparting from the spirit of the invention. It is the intention therefore to be limited only as indicated by the scope of the following claim.

What is claimed is as follows: In a machine of the class described, a denominational order of an accumulator, a readout device controlled thereby including a plurality 'of stationary segments, one for each digit and a brush positionable by the accumulator order to contact the segment representing the digit standing in said order, punching mechanism onerative to punch in the order 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, means to send an electrical impulse to each segment in succession in said order to cause completion of a circuit for controlling said punching mechanism through the segment at which said brush is positioned, and means for advancing said brush toward zero position after a circuit has been completed therethrough and before an impulse is sent to the next segment.

CLAIR D3 LAKE. 

